android - AutoCompleteTextView - 建议在调用 `notifyDataSetChanged` 时自动关闭

Question

我创建了适配器并创建了过滤器。适配器工作正常，但每次我调用 notifyDataSetChanged 时，AutoCompleteTextView 的下拉列表都会关闭，然后重新打开并提供新建议。

有什么办法可以避免下拉菜单的关闭和重新打开？

编辑

class MyAdapter extends ArrayAdapter<String> {

    private static final Filter NO_FILTER = new NoFilter();

    private final Handler mHandler = new Handler();

    public MyAdapter(Context context, int textViewResourceId) {
        super(context, textViewResourceId);
    }

    public void updateList(String prefix) {
        List<String> list = ...; //from web server;

        clear();
        foreach (String s : list)
            add(s);
        notifyDataSetChanged();
    }


    @Override
    public Filter getFilter() {
        return NO_FILTER;
    }


    private static class NoFilter extends Filter {
        @Override
        protected FilterResults performFiltering(CharSequence prefix) {
            return new FilterResults();
        }

        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
        }
    }
}

Answer 1

尝试在方法 publishResults(..) 中使用 notifyDataSetChanged()

例如:

Android AutoCompleteTextView with Custom Adapter filtering not working

http://jnastase.alner.net/archive/2010/12/19/custom-adapter-for-autocomplete.aspx